Why would one take to the outdoors for their drumming fix? Simple. When you live in an apartment, your neighbors would not appreciate your practice sessions.

Why the highway? This is Idaho common sense in all its glory. You don't want to go into the woods or a park and scare the wildlife. If you're right next to the highway, you have easy access to pull your car in and out without hassle. And, no one is likely to complain since the vehicle sounds near the roadway ain't pretty either.